Browse free open source Cryptography software and projects for Windows and Linux below. Use the toggles on the left to filter open source Cryptography software by OS, license, language, programming language, and project status.

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  • 1
    Cryptomator

    Cryptomator

    Multi-platform transparent client-side encryption for your cloud files

    Cryptomator is a free and open source project that offers multi-platform, transparent client side encryption of your files in the cloud. It works with just about any cloud storage service; is totally transparent so you can work with your files how you normally would; and secure with a 256-bit key length AES encryption. It’s also simple and easy to use with no need for different accounts, key management, cloud access grants or cipher configurations.
    Downloads: 32 This Week
    Last Update:
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  • 2
    AirSnort is a wireless LAN (WLAN) tool which cracks encryption keys on 802.11b WEP networks. AirSnort operates by passively monitoring transmissions, computing the encryption key when enough packets have been gathered.
    Downloads: 75 This Week
    Last Update:
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  • 3
    axTLS is a TLSv1 SSL library designed specifically for embedded devices, with a highly configurable interface for small memory footprints.
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    Downloads: 15 This Week
    Last Update:
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  • 4
    Simplebackup is a cross-platform backup program. It reads a configuration file then builds a compress backup set, finally places the compressed files into another location (a directory, a remote http,ftp,sftp server or even one or more email accounts).
    Downloads: 19 This Week
    Last Update:
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  • 5
    WASTE is a mesh-based workgroup tool that allows for encrypted, private communication between distant parties on the internet, independant of local network organization.
    Downloads: 9 This Week
    Last Update:
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  • 6
    HPN-SSH is a series of performance patches for OpenSSH. By addressing network limitations and CPU limitations significant throughput performance can be realized. Gains of close to two orders of magnitude are possible on long fat network paths. The official git repo is now available at http://github.com/rapier1/openssh-portable. The Sourceforge repository should not be seen as the canonical repository for HPN-SSH. We will update it as we can but users should look to github to generate patches We also support Ubuntu packages. Add them to your package manager with `sudo add-apt-repository ppa:rapier1/hpnssh` Fedora RPMs can be added with, `sudo dnf copr enable rapier1/hpnssh`
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    Downloads: 20 This Week
    Last Update:
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  • 7
    ReHash is an easy-to-use console-based hash calculation tool written in C++. It supports many algorithms and output formats and it can be fully configured using some of the many command-line arguments which can be passed to the tool.
    Downloads: 5 This Week
    Last Update:
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  • 8
    QPass password manager
    QPass is easy to use, open source password manager application with built-in password generator. You can store in it's database such data as passwords and logins which will be encrypted using AES-256 with PBKDF2(number of iterations set by user). Each entry can include additional information about entry such as name, url adress and description.
    Downloads: 3 This Week
    Last Update:
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  • 9
    silvertunnel - Java lib+browser for TOR
    silvertunnel.org is a project that provides an end-user browser, a Java library and additional Java security tools to easily access anonymity networks such as the Tor (torproject.org) network. Secure and easy to use. Tor4Java and Tor Browser. Attention: see project status on page https://sourceforge.net/p/silvertunnel/discussion/962278/thread/83dc2d02/#
    Downloads: 4 This Week
    Last Update:
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  • 10
    OpenCA

    OpenCA

    Open Source PKI solutions

    The OpenCA PKI Development Project is a collaborative effort to develop a robust, full-featured and Open Source out-of-the-box Certification Authority implementing the most used protocols with full-strength cryptography world-wide.
    Downloads: 1 This Week
    Last Update:
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  • 11
    mendelson AS4

    mendelson AS4

    AS4 Solution for ENTSOG, e-SENS, ebMS, PEPPOL, ICS2, BDEW

    mendelson AS4 is a free JAVA-based open source AS4 solution. Contains a monitoring- and configuration GUI (SWING), supports PUSH and PULL messages, ENTSOG AS4, e-SENS AS4, ebMS AS4, BDEW AS4, PEPPOL AS4, ICS2 AS4, signatures (SOAP, payload), selectable profile per trading partner, encryption (SOAP, payload), UserNameToken, TLS, pluggable into any servlet container, trading partner management, compression, certificate management
    Downloads: 4 This Week
    Last Update:
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  • 12
    Cross platform GUI managing bookmarks and shortcuts in a portable way. Support import/export, search, encryption, hierarchical tags, USB key installation, various environments integration, OS-dependent shortcuts, plugins extensibility.
    Downloads: 2 This Week
    Last Update:
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  • 13
    A fork of WASTE 1.5.0.408 beta 3 starting form 1.5.1.412 beta 3
    Downloads: 1 This Week
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  • 14
    ECTP - Encrypted Compressed Transfer Protocol This protocol is similar to HTTP but with commands and features like FTP. The main features are security and compression abilities and the consequent use of one perisistant connection.
    Downloads: 1 This Week
    Last Update:
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  • 15
    siggen is a cool email signature generator for encrypted ansi c (confused), brainf*ck, ... signatures. Use it in combination with vi(m), emacs, mutt, pine, or what ever. (tested on Solaris, Linux and Windoze). Optimized only for geeks :-)
    Downloads: 1 This Week
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  • 16
    Cryptomak contains cipher and tools for encryption utility written in php such as substitution, vigenere, affine, transposition and index of coincidence. It is powered by Phrame platform which implements MVC design and Smarty template engine.
    Downloads: 1 This Week
    Last Update:
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  • 17
    Firecat package project aims to group a list of auditing extensions for Firefox based on FireCat project : http://www.security-database.com/toolswatch/+-FireCAT-+.html
    Downloads: 1 This Week
    Last Update:
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  • 18
    HashSum is a .NET port from GNU's md5sum and sha1sum. It supports: hash algorithm selection between MD5 and SHA1 (more could be added later) and compatibility between HashSum and GNU's checksum file format
    Downloads: 1 This Week
    Last Update:
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  • 19
    Pechkin

    Pechkin

    lightweight bitmessage client

    Pechkin.v0.3.2 Copyright 2017 Fenenko Aleksandr. Licensed Apache License, Version 2.0; This is lightweight bitmessage client writing in java. Supported platform: Android,Linux,Windows PS: If you liked this programm, buy the author a coffee https://www.buymeacoffee.com/fenenkoG
    Downloads: 1 This Week
    Last Update:
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  • 20
    Provides efficient, effective implementations of 32- and 64-bit hash functions based on Rabin fingerprints / irreducible polynomials, in Java. Also provides integration with java.security.MessageDigest API.
    Downloads: 1 This Week
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  • 21
    Secure Data Manager
    Password Manager - Manage your passwords and private information in one secure application for web sites, computers, programs. Search, add, edit, delete, print, etc. Java app, runs everywhere. Uses SunJCE crypto.
    Downloads: 1 This Week
    Last Update:
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  • 22
    This is where web developers can get tools that can make their life easier. Web technologies and languages used contain but are not limited to HTML, XHTML, CSS, JavaScript, PHP, and AJAX. All code is extremely slim, fast running, and is W3C compliant.
    Downloads: 1 This Week
    Last Update:
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  • 23

    Adytum PHP CA Suite

    PHP-driven CA for small enterprises

    Adytum is a certificate authority suite, powered by OpenSSL, specifically designed for internal use small enterprises which need a secure and robust PHP solution without the rich feature set of software aimed at large retail CAs.
    Downloads: 0 This Week
    Last Update:
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  • 24
    Encryption plugin for Alfresco. Enables the user to crypt and decrypt (it handles the 'pkcs5' MIME-type). This is a component of the IDX-eDOC project (OpenTrust suite), contributed by IDEALX
    Downloads: 0 This Week
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  • 25
    Ampare Hide Links

    Ampare Hide Links

    Ampare Hide Link is a script which auto hide real link on your website

    Ampare Hide Link is a script which auto hide link on your website to prevent user from knowing the final destination. Ampare Hide Link is using Defat Technology and other to protect your link on iframe and other tags. If you want to share some content but want to keep the url private. You can use Ampare Hide Link . It is free
    Downloads: 0 This Week
    Last Update:
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